Verizon may torpedo the deal to buy Yahoo for $4.8 billion after the Sunnyvale company revealed it knew in 2014 about a hack that year that stole personal information from more than half a billion user accounts.

The stock markets on Thursday celebrated Donald Trump’s election-night triumph with a record high, further easing fears of an economic slump, but tech stocks for a second straight day failed to join the party and suffered a selling spree.